Fresh air treatment mechanism for factory air

The invention discloses a fresh air treatment mechanism for factory air, and relates to the technical field of fresh air treatment.The fresh air treatment mechanism for factory air comprises a mounting box body, and four sets of partition plates are fixed in the mounting box body. According to the fresh air treatment mechanism for the factory air, in the fresh air treatment process of the factory air, through mutual cooperation of the recognition assembly and the filtering assembly, when the difference between the air inlet amount of the indoor air inlet pipe and the air inlet amount of the outdoor air inlet pipe is large, filtering belts at different positions are transmitted and switched to be located in the mounting frame for filtering; the unused or cleaned filter strips on the two groups of mounting frames are synchronously switched to treat the inlet air, so that the filter permeability of the filter strips on the two groups of mounting frames is basically the same, and the probability that the air infl